Filter for internal-combustion engines



March 11, 1952 c. BELLIOS FILTER FOR INTERNAL-COMBUSTION ENGINES 2 SHEETSSHEET 1 Filed Oct. 19, 1948 INVENTOR CONSTANTINQS Bmuos GEE;

March 11, 1952 c. BELLIOS 2,583,474

FILTER FOR INTERNAL-COMBUSTION ENGINES Filed Oct. 19, 1948 2 SHEETSSHEET 2 INVENTOR. CoNs'rAmmos BELuos Patented Mar. 11, 1952 UNITED STATES PATENT OFFICE FILTER FORINTERNAL-COMBUSTION ENGINES Constantinos :Bellios, Brooklyn, N. Y.

Application October 19, 1948, Serial No.'55,255

4 Claims.

an engine cylinder during its intake stroke reaches the intake manifold of the engine, such mixture is subjected to a greater suction than would otherwise be possible and'at the same time subjected to a scrubbing and filtering action.

A feature of the invention is the provision by said auxiliary device of a special chamber in the form of a relatively long and preferably tortuous passage, as 'one'of U-extension, through which said mixture must pass. A further feature of the invention is the placement 'in said passage of a filter means for the mixture, with this means located intermediate the ends of said passage, and, where the passage is of U-shaped extension as above, at what may be called the bowl of the U, that is, where there is a preferably sharp change in the direction of travel of the mixture through said special chamber.

Another object 'of the present invention proposes the provision of a one-way inlet valve along the length of the tortuous passagefor connecting the passage with the atmosphere and arranged to be opened when a partial vacuum is created within the passage in a manner to permit outside air to enter the passage and .relieve the vacuum.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

Fig. 1 is a view showing in central longitudinal section one now approved embodiment of the new device, with the same in one possible operative .relation to a conventional carburetor various familiar components of which are indicated in dot and dash lines.

Fig. 2 is a transverse section, taken on the line 2-2 of Fig. '1.

Fig. .3 is a perspective view of a fitment which in the use of certain types of filter means may desirably be present.

Fig. 4 is a view, partially in elevation and partially in central longitudinal section, showing a modification of the new device of Fig. 1.

2 V Fig. 5 is a view similar to Fig. -1,. but 0n a vreduced scale, showing the new device, embodied either-as in Fig. -1 or as in Fig. 4,.in anotherpo'ssible operative relation to the carburetor.

Fig.6 is also a view similar to Fig. l, and drawn to the same scale as in Fig. 1, but showingfianother now favored embodiment of the invention.

Fig. 7 is a transverse section taken-on the line 'l--I of Fig. -6

Fig. 8 is a transverse .section taken on the'line 8-8 of Fig. 6. r

Fig. 9 is a view similar to Fig. 5, but showing the new device as embodied in Fig. 6 in another possible operative relation to the carburetor.

Referring to the drawings in detail, in Figs. 1, 5, 6 and .9 the carburetor conventionally -indicated in dotand dash lines is shown, in accord-- ance with the design of most modern carburetors,

as comprising three separable sections; these-being an air inlet connection I0 having the familiar choke valve Ill a central main body section II in which the air and fuel are mixed, and amixtureoutlet section I2 having-the familiar throttle valve I2 The section I0 leads from asuitable 'air scoop not shown, and the section -I-2 .leads to a suitable intake manifold, such as indicated at HI, and having the usual butterfly valve II.

The new device, as embodied in Figs. 1-3, and marked as whole I5, is illustrated as in the form of an elongate cylindrical casing structure having a central longitudinal partition I6. Said casing -is shown, for example, as in two separable sections I! and I8 having matching-external annular flanges I'I and I'I to be tightly coupled by a suitable "plurality of bolts I9.

The partition I6 is continuous longitudinally of both said section I1 and I8, from the very-end of the section I! remote from its flange 'I'I /to'a point spaced somewhat from the end of the section l8 remote from its flange I8 This spacing is to provide a compartment within which a suitable filter means 20 may be. positioned. This filter, which may be of any appropriate type, is illustrated as a mass of fibrous material.

For holding the partition I6 fin'place, the section I8 along each of its opposite sides is provided with an internal longitudinally extending rib 2| carrying a groove '22 I'centrally thereof and almost as long as the rib. The section I'I along each of its opposite sides is ,provided with an internal longitudinally extending rib carrying .centrally thereof and along the entirety of its length a groove like one of the grooves Hand alignab'le therewith. One of the two last-mentioned ribs .is indicated at 23. The rib 23 and .the oppositely disposed similar rib in the section H are joined by a laterally extending rib 24 carrying centrally thereof and all along its length a groove 25. This groove is in the same plane with the two other grooves in the section II, that is, with the groove along the rib 23 and with the groove along the rib opposite to said rib 23. The apertures of the flanges I! and I8 through which the bolts I9 are to be applied are so positioned that when the apertures of one of said flanges match the apertures of the other. the two grooves 22 in the section I8 are in the same plane with the grooves respectively carried by the rib I3 and its companion rib in the section I1.

Thus, with all these five grooves of a width substantially equal to the thickness of the partition I6, the latter may be fully slid into the section I1, then the flanged end of the section I8 may be advanced toward and for groove engagement with the end of the partition I6 protruded from the section II, and said section I8 may be further moved toward the section I! to cause abutment of the flanges II and I8; thereby tightly to mount the partition I6 in and longitudinally of the device I5, to provide a passageway 26 leading to the compartment for the filter 28 and a passageway 21 leading away from such compartment.

For holding the filter 28 in place, and at the same time for restraining the partition I6 against endwise shift out of the groove 25, where such filter is of loosely packed fibrous material, a skeletal fitment 28 is provided. As shown best in Fig. 3, such fitment incorporates a three-armed spider portion 29 and three legs 38, said legs being spaced 120 apart, with each leg ofiset from the outer end of a different arm of said spider portion perpendicularly to the general plane of the latter. As will be understood, before the sections I1 and I8 are assembled as above about the partition I6, then for application of the bolts I9, the filter 20 and the fitment 28 are placed in the outer end of the section I8. The end of the partition I6 adjacent the fitment 28 has its center portion shaped to engage about the adjacent portion of the fitment 28 so that the end of the partition may engage the adjacent face of the filter 28.

The section II, at its end remote from its flange, and above the situs of the partition I6, is shaped to include an upstanding neck 3| topped by an external annular flange 32; and said section II, opposite to the neck 3|, and below the situs of the partition I6, is shaped to include 2. depending geek 32 bottomed by an external annular flange One possible operative relation of the device I5 to the carburetor is illustrated in Fig. 1, where, as will be observed, said device is interposed between the carburetors mixture outlet section I2 and the engines intake manifold I4; and there secured as by means of a plurality of bolts or the like as indicated at 35 and as by means of a plurality of bolts or the like as indicated at 36.

Mounted on the cylindrical casing I5 on one side of the partition I6 there is a one-way inlet valve 48. The valve is located on the casing to communicate with the portion of the interior passage between the filter 20 and the intake manifold I4 of the engine.

The one-way inlet valve 40 is composed of an inner body section 4I formed with a tubular threaded bushing 42 threaded into the side of the cylindrical casing I5. An outer body section 43 is threadedly connected with the inner body section H and is formed with an inlet open g 4 4 which communicates with the atmosphere. The inlet opening 44 is closed by a ball 45 which is retained in an operative position closing the opening 44, by an expansion spring 46. The expansion spring 46 operates between the ball 45 and the end wall of the inner body section 4 I.

When the operation of the motor creates a partial vacuum in the portion of the passage between the filter 28 and the intake manifold I4, the pressure of the outside atmosphere will disengage the ball 45 from the inlet opening 44 against the holding pressure of the expansion spring 46 and permit the outside atmosphere to enter the passage until the partial vacuum is relieved after which the expansion spring 46 will again urge the ball 45 into its operative position closing the inlet opening 44.

The new device as embodied in Fig. 4, and there marked as a Whole I 5',"diifers from the device I5 of Figs. 1 and 2, particularly in that a casing structure is provided which incorporates a single main section 31 and an end screw-cap 38, and also particularly in that the fitment 28 is omitted. as could be done even in the device I5 if the filter be of a suificiently tightly packed fibrous nature or otherwise be somewhat resistant to depthwise deformation under moderate mechanical compressive force. At the end of the section 31 remote from its open end, said end externally threaded for taking the cap 38, there is provided an internal longitudinally grooved rib 23' corresponding to the rib 23, and along each of the opposite sides of said section 31 is an internal longitudinally grooved rib, one of which ribs is marked 39, and each of which corresponds, in function relative to the partition I6, to an alignable pair of ribs 23 and 2| respectively extending longitudinally of the sections I! and I8 of the device I5. The filter is indicated at 28; and flanged necks corresponding to the necks 3| and 33 are respectively indicated at 3| and 33'.

The cap 38 is screw threaded onto the end of the casing structure I5 and the filter 28' is fitted into the end of the casing structure. The interior of the cap 38 is formed with a circular flange 38 which is spaced from the end wall of the cap 38 and which bears against the outside face of the filter 28' holding the filter in position within the casing structure with its inner face engaging against the adjacent end of the partition I6. The arrangement of the flange 38 provides a space 38 within the cap 38 between the adjacent faces of the filter 20' and the end Wall of the cap 38.

Mounted on the cap 38 there is a one-way inlet valve 48', similar in construction to the one-way inlet valve 48 of the previous form of the invention, arranged to connect the space 38 with the outside atmosphere when a partial vacuum is created within the passage of the device as in the previous form of the invention.

The device may be interposed, as explained above in connection with the device I5, between the carburetors mixture outlet section I2 and the manifold I4.

In the new device as embodied in Figs. 6-8, and there marked as a whole I5, the parts to which are applied reference numerals with double primes added correspond, respectively, to the parts to which are applied reference numerals without primes. The partition for providing the two passages 26" and 2'! is shown at 40 as made over a part of its length-integral with the section I1 and is shown at 4| as made over the remainder of its length integral with the section I8". Here, it

will be noted, the device is of substantially L-shaped extension, with each section I1" and [8" having, adjacent its flange Il or Ill a longitudinally arcuately curved end portion.

While in Fig. 6, the device 15 is shown as interposed between the carburetors mixture outlet section 12 and the manifold M, in Fig. 9 the device I5" is shown as interposed between the carburetors central main body section I I and its mixture outlet section I2.

The attachments of the present invention function to scrub and filter the fuel-air mixture supplied to the motor, but in addition the contained filter further serves to break up the wet fuel particles so that they blend more evenly with the air forming a more combustible fuel-air mixture.

On the drawings, the cylindrical casing is illustrated with the U-shaped extension extended horizontally or curved downward, but it is pointed out that this is by way of illustration only, as the U-shaped extension may be extended vertically upward, may be curved to extend upward or may be conformed to any other desired sha e without departing from the scope and intent of the present invention.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and the right is re erved to all changes and modifications coming within the scone of the invention as defined in the appended claims.

Having thus described my invention, what I claim as new, and desire to secure by United States Letters Patent is:

1. In a device of the class described having an elongated tubular casing with one end closed and the other end open and provided adjacent its closed end With an entrance port for connection to an engine carburetor and diametrically opposite the entrance port with an exit port for connection to the intake manifo d of an en ine, a longitudinal partition po itioned axially Within the casing with its width extended at ri ht angles to the axis of the ports and with one end en aged against the closed end of the casing and with its other end s aced inward of the open end of the casing, a fi ter fitted into the open end of the casing with its inner face abutted against the adjacent end of said partition and its outer face flush with the open end of the casing, a cap screw threaded onto the open end of the ca ing, an inwardly directed flange within said cap and spaced from its end wall and engaging the outer face of said filter holding it in position and engaging the open end of the casing holding the end wall of the cap spaced from the outer face of said filter.

2. In a device of the class described having an elongated tubular casing with one end closed and the other end open and provided adjacent its casing, a filter fitted into the open end of the casing with its inner face abutted against the adjacent end of said partitions and its outer face flush with the open end of the casing, a cap screw threaded onto the open end of the casing, an inwardly directed flange within said cap and spaced from its end wall and engaging the outer face of said filter holding it in position and engaging the open end of the casing holding the end wall of the cap spaced from the outer face of said filter, said partition being removable mounted in position within the casing to be removed when cap and filter are removed.

3. In a device of the class described having an elongated tubular casing with one end closed and the other end 'open and provided adjacent its closed end with an entrance port for connection to an engine carburetor and diametrically opposite the entrance port with an exit port for connection to the intake manifold of an engine, a longitudinal partition positioned axially within the casing with its width extended at right angles to the axis of the ports and with one end engaged against the closed end of the casing and with its other end spaced inward of the open end of the casing, a filter fitted into the open end of the casing with its inner face abutted against the adjacent end of said partition and its outer face flush with the open end of the casing, a cap screw threaded onto the open end of the casing, an inwardly directed flange within said cap and spaced from its end wall and engaging the outer face of said filter holding it in position and engaging the open end of the casing holding the end wall of the cap spaced from the outer face of said filter, and a grooved rib formed along the inner faces of the sides and closed end of the tubular casing and into which said partition is slidably fitted to be removed when said cap and filter are removed.

l. In a device of the class described having an elongated tubular casing with one end closed and the other end open and provided adjacent its closed end with an entrance port for connection to an engine carburetor and diametrically opposite the entrance port with an exit port for connection to the intake manifold of an engine, a longitudinal partition positioned axially within the casing with its width extended at right angles to the axis of the ports and with one end engaged against the closed end of the casing and with its other end spaced inward of the open end of the casing, a filter fitted into the open end of the easing with its inner face abutted against the adjacent end of said partition and its outer face flush with the open end of the casing, a cap screw threaded onto the open end of the casing, an inwardly directed flange within said cap and spaced from its end wall and engaging the outer face of said filter holding it in position and engaging the open end of the casing holding the end Wall of the cap spaced from the outer face of said filter, and an inlet valve mounted through the end wall of said cap to communicate with the space between the adjacent faces of said filter and the end wall of said cap.

CONSTANTINOS BELLIOS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,275,117 Winters Aug. 6, 1918 1,623,721 Florey Apr. 5, 1927 2,097,216 Schreurs Oct. 26, 1937 2,193,777 Jagmin Mar. 12, 1940 

